Coal jig



july 15 1924. v

G. w. w n MoT COAL JIG Filed Dec. 23 1921 2 Sheets-Sheet 1 ATTORNEY.

July -15 1924.

G. w. wlLMor` COAL JIG Filed uw. 23. 1921 2 stuw-shea 2 '25 P63?3 eb 3.5/

obouooon.

anuncian `el 6o 656035260 IN V EN TOR.

1W? w WM BY ATTORNEY.y

Patented July 15, 1924.

unirse AsrArEs .PATENT "orgies GEORGE w. .wrm/IOT, or HnzLEToN, PENNSYLVANIA, AssIGNoR .froxwILlvIo'r ENGINEER;

ING COMPANY, or HAzLE'roN, PENNSYLVANIA,

n VANIA.

A CORPORAT1ON OF PENNSYL- l coAI. ne.

Application led YDecember 23, 1921. Serial No. 524,343.

To V'all whom z'z may concern.:

Be it .known that ,LGEORGE'VW WILMoT, a citizen of the United States, and a resident 'of Hazletom in the county of vLuzerne and Stateof Pennsylvania, haveinvented an *lm* provement in ;Coal..Jigs, of which the :following is a specification.

.My .invention .relates Vto apparatus `which is adapted for use in the washing of coal7 or ores of various kinds, although designed by melprimarily for use in Ya coal jig for washing coal.

In the use of a jig of the ,vibrating pan type .-of the character depicted in the draw--y ings .it is -deSiredt-hat, as far as may be practicable, aconstantly forwardly moving flow of the water in the tank shall be maintained through .the jig pan. Therefore7 it isV one ofthe objects of .my invention -to provide a new -and novel improved means to prevent reverse `movement or ow of the water withinthe panas the latter is moved'upwardly in its .vibratory movements. By this means the voccurrence of conditions in the water in the .jig pan at intervals under which the .coal .may settle or tend to settle to the bottom .thereof with the slate and other relatively .heavy impurities which itis desired to remove issprevented.

More specifically my .invention relates to the construction :of valve mechanism underneaththe jig pan'by which the .upward for.- ward :How of 'the water through .the pan is more efficiently controlled than heretofore li-asbeen the case.

A .-further object .is to provide a structure which isbothsimple and durable and which may be economically manufactured.

To these .and other ends my invention comprehends theconstruction and arrangementfofparts as hereinafter more fully described and particularly pointed out in the claims.

In order that .the invention lmay be more readilyunderstood andthe practical advantages Vithereof :fully appreciated, reference should be had tothe Yaccompanying drawing in which onev form of embodiment of the same is shown. Howeven it will be understoodthat changes in the details of construe; tion may be'made within the scope ofthe claims without departing Afrom the invention.

In thedrawings:

Fig. 1 is a view in longitudinal vertical sectionof a coal4 and .fore washing .apparatus embodying my invention Fig. 2 is anenlarged Alongitudinal vertical sectional view of the jig pan shown in Fig, A1;

Fig. 3 .is asectional view of a portionof the bottomofthe jig pan and of the valve mechanism showing more clearly details of construction and indicating the operation thereof; f

Fig .4 is a top Vplan view of the jigpan with the greater portion of the bottom .removed therefrom;

Fig. '5 isa transverse the jig pan;

Fig. 6 .isa top plan view ofasection or portion of the valve mechanism; and

Fig. 7 is a longitudinalsectional View of a hollow pipe. with closed .ends which is adapted tobeemployed as avalve.

Referring to the drawings: 41 designates a portion ofthe tank .of the coal-and 'ore washing apparatus, and i2 one of the parts of the .framestructure which supports the said tank. i

BdeSignates the opposite side walls of the jig pan `which walls are provided at their lower Vedges with laterally and outwardly turnedilangese. The pan is supported upon depending 'links or bars 5,.the lower ends of lwhich are guided in openings through brackets '5a. The said links or bars are supported at their upper ends in the usual manner upon eccentrics one of which is shown at' in Fig. `1 upon a shaft 7 which is adapted Vto 'be rotatably driven through a power 'beltSrand a wheel or pulley 9.

The gate at 15 at the forward end of the'bottom of the jig pan 3 is hingedly connected and supported at 16 at its inner end and is supported at itsouter end by. means of links '17 in the yusual manner. The upper ends of these links are connected to the outer or forward ends of 'bars'18 pivoted at 20 upon uprights or posts 21. The opposite ends of the said bars 18 are provided With adjustable weights'22.

The bottom of the jig pan is provided with the usual 'perforations 26, the size of the perforations depending upon the size ofthe lumps of coal or other ore being washed. 'The valve mechanism previously referred to is situated underneath the bottom of the .jig pan :and comprises a plurality otbase sectional view Yof members 30, four being provided in the present construction. The portions of these members upon opposite sides of the center 31 thereof may be regarded or described broadly as ofpan-like formation. The said portions upon opposite sides of the central rib 3l are provided with side portions 32 which fit against the under side of the bottom 25, as indicated in Fig. 2 of the draw; ings. The opposite ends of the members 30 terminate in vertical walls 33. Laterally and outwardly extending flanges 34 are provided at the upper ends of the end walls 33 which flanges are situated underneath the flanges 4l. The opposite side edges of the bottom 25 extend beyond the planes of the side walls 3 of thej ig pan and the end walls 33 of the base members 30 of the valve mechanism and are situated intermediate the flanges l and 34. Screw bolts 35 extend through these flanges and through the opposite edge portions of the bottom so that all three of these parts are secured firmly together. The contact ofthe edges of the side walls 32, the end walls 33 and of the central rib 31 with the under side of the bottom 25 forms a plurality of chambers underneath the said bottom. The bottoms of these respective chambers are provided with longitudinally extending narrow openings 40 upon the opposite sides of which narrow flanges 41 are provided. The upper edges of these flanges alarev provided at intervals with projections 42 which terminate a short distance below the under side'of the bottom 25 of the jig. These projections are of less thickness than the thickness of the flanges l1 so that shoulders 43 are provided between the said projections and the adjacent inner edges of the said flanges. The inner adjacent and opposing edges of the flangeszl constitute seats for the elongated valve members 46, which valve members are of cylindrical form and also are hollow. lVhen these' valve members are in their lowermost positions Vas shown in Figs. 2 and 3 of the drawings the elongated openings 40 areclosed and' the said valve members occupy this position both when the jig is stationary and when it is losingA moved or lifted upwardly. The opposite ends of the valve members 46 are adapted to berclosed byscrew threaded plugs 47 although if preferred the said plugs may be omitted so that the opposite ends of the said valve memberswill remain open. In actual practice, however, it is preferred to retain the plug closures so that a desired amount of water or some other substance may be introduced into the said valves so as to vary their weight, as is indica-ted in Fig. 7. If it is desired that the valves shall respond quickly during the vibrations of the jig pan so kas to quickly open and close the passageways 40, the said valves should be lighter than if it is desired or preferred to have them respond more slowly. In other words, if the tubular valve members 46 are weighted so that they are relatively very heavy they will not operate as quickly to open and close the said passageways` 40 Yas they would if they were lighter. It will be apparent, therefore, that by providing means whereby the weight of the tubular valve members may be varied I have provided means whereby the flow of water through the pan due to the vibratory motions thereof may be controlled to a greater or less extent. Bythis means the efliciency in operation of the jig in the washing of coa-l or ore materials may be increased.

It will be understood that when the jig pan descends in the operation thereof thek tubular valveV members 46 are moved upwardly away from their seats upon the adjacent opposing corners or edges Vo-f the flanges el so as to open the passageways Ll0 and permit the upward flow of water therethrough and that upon the upward move? ment of the said jig pan the said valve members move in the opposite direction to close the said passageways and thus prevent a backward or downward flow of water from the pan through the perforations 26.` As a result of the presence of these valves the flow of water through the said jig pan is more continuous and more constant, in consequence of which the coal or ore is more efficiently and more completely separated from impurities, such as slate, etc., than otherwise would be the case.

In the use ofthe apparatus, for instance for washing coal, the coal is discharged from a chute`50 into the rear end portion of the jig pan between the rearwall thereof and a plate 5l, the lower edge of which is situated a greater or less distance above the bottom 25 of the said jig pan. The vibratory movements of the jig pan are such as to cause forward movement of the coal together withV any slate or other impurities intermiXed therewith. Theislate and other impurities which are heavier than the coal travel along upon the bottom 25 of the jig pan while the lighter'material, coal, travels along within the water above the said slate and is ultimately discharged through the discharge chute 52. The slate piles up upon the bottom of the discharge gate 15 until its weightY is suflicient to overbalance the weights 22, whereupon the said gate is opened a sufficient distance to allow the slate to be discharged from the said gate. The operationy will not be further described because such operation is well known to those 4skilled in the art. Y

Having thus described my invention, what I claim and desire to secure by Letters Patent is: i Y i 1. In apparatus of the character described, the combination of a jig pan having a perforated bottom, a plurality of members secured to the said jig pan and situated underneath the said pan in contiguous relation to each other, said members respectively forming with the lbottom of the said jig pan chambers and each vof said members having openings through the bottom thereof, valves for controlling the passage of water through said openings, and means for guiding said valves in their movements yand retaining them in operative relation with respect to said openings.

2. In apparatus of the character described, the combination of a jig pan haviing a perforated bottom, elongated pan-like members secured to said jig pan and situated underneath the said bottom and forming with the latter chambers, elongated openings in the bottoms of said members, said openings having upwardly extending flanges upon the opposite sides thereof, which flanges are provided with upwardly extending projections located at intervals, and an elongated valve member situated between the said projections and adapted to contact withr the edges of the said flanges.

3. In apparatus of the character described, the combination of a jig pan having a perforated bottom and having laterally and outwardly extending flanges at the lower edges of its opposite sides, pan-like members extending across the said jig pan and situated underneath the said bottom and forming therewith chambers, the opposite ends of said members being provided with lianges, means for connecting the said flanges to the flanges upon the opposite sides of the said jig pan, and the said panlilre members being provided with openings in the bottoms thereof, said openings having flanges upon the opposite sides thereof, which flanges are provided with upwardly extending projections located at intervals, and valves situated above said openings between the said projections.

4.-. In apparatus of the character described, the combination of a jig pan having a perforated bottom, elongated panlike members secured to the said jig pan and situated under the bottom thereof, the upper edges of the side and end walls of the said members contacting with the bottom of the said jig pan, and the said members each having a central partition wall dividing each of the same into two chambers, elongated openings through the bottoms of said respective chambers, projections situated at intervals upon the opposite sides of the said openings, and elongated tubular valves situated between the said projections and adapted to control the passage of water through the said openings.

5. In apparatus of the character described, the combination of a jig pan having a perforated bottom, means for vibrating the said jig pan to effect the passage of water through the same, a plurality of panlike members secured to the said jig pan and situated underneath the said perforated bottom, the side and end walls of the said members co-operating with the said perforated bottom to form chambers underneath the latter, and the said members each being provided with narrow openings through the bottoms thereof, elongated valves situated over the said openings and adapted to control the flow of water therethrough, and means upon the opposite sides of each of said openings for retaining the said valve members in position and guiding the same in their movements with respect to the said openings.

In testimony that I claim the foregoing as my invention, I have hereunto signed my name this 17th day of Dec., A. D., 1921.

GEORGE W. WILMGT. 

